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Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

Holdings in Q4 2021

Holdings as of Dec 31, 2021, filed Jan 10, 2022. Long positions only; changes compare share counts with Q3 2021.

Institution overview
Positions
102
0 vs. Q3 2021
Portfolio value
$166.0M
+$7.07M (+4.4%) vs. Q3 2021
Filed
Jan 10, 2022
SEC
Holdings of Penbrook Management LLC in Q4 2021
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVONovo Nordisk A SADR171,650$19.2M11.6%00.0%UnchangedHistory
MSFTMicrosoft CorpStock36,946$12.4M7.5%−840−2.2%ReducedHistory
AMZNAmazon Com IncStock2,700$9.00M5.4%00.0%UnchangedHistory
MCOMoodys CorpStock15,200$5.94M3.6%00.0%UnchangedHistory
ACLSAxcelis Technologies IncStock62,300$4.64M2.8%−1,500−2.4%ReducedHistory
GOOGAlphabet Inc.Stock1,551$4.49M2.7%−10−0.6%ReducedHistory
GOOGLAlphabet Inc.Stock1,545$4.48M2.7%00.0%UnchangedHistory
TRIThomson Reuters CorpCOM NEW32,136$3.84M2.3%−100.0%ReducedHistory
AZTAAzenta, Inc.COM34,190$3.52M2.1%−7,120−17.2%ReducedHistory
BXBlackstone Inc.COM24,780$3.21M1.9%00.0%UnchangedHistory
INVEINVE Technologies, Inc.COM NEW112,137$3.16M1.9%−24,135−17.7%ReducedHistory
COHUCohu IncCOM76,135$2.90M1.7%+59,135+347.9%AddedHistory
NVVENuvve Holding Corp.COM206,235$2.75M1.7%+450+0.2%AddedHistory
PLABPhotronics IncCOM140,600$2.65M1.6%−250−0.2%ReducedHistory
SONYSony Group CorpSPONSORED ADR20,700$2.62M1.6%00.0%UnchangedHistory
AAPLApple Inc.Stock14,301$2.54M1.5%−35−0.2%ReducedHistory
CYBECyberoptics CorpCOM54,195$2.52M1.5%−2,655−4.7%ReducedHistory
FNFFidelity National Financial, Inc.COM SHS44,279$2.31M1.4%−500−1.1%ReducedHistory
NNYNuveen New York Municipal Value FundCOM213,727$2.11M1.3%00.0%UnchangedHistory
CYRXCryoport, Inc.COM PAR $0.00133,895$2.01M1.2%−2,000−5.6%ReducedHistory
Crescent PT Energy Corp22576C101COM359,450$1.92M1.2%+29,200+8.8%Added–
BNEDBarnes & Noble Education, Inc.COM268,755$1.83M1.1%−700−0.3%ReducedHistory
ADPAutomatic Data Processing IncStock7,400$1.82M1.1%−100−1.3%ReducedHistory
BLFSBiolife Solutions IncCOM NEW48,615$1.81M1.1%−80−0.2%ReducedHistory
USACUSA Compression Partners, LPCOMUNIT LTDPAR103,825$1.81M1.1%+1,600+1.6%AddedHistory
SPYSPDR S&P 500 ETF TrustETF3,762$1.79M1.1%00.0%UnchangedHistory
BPOPPopular, Inc.COM NEW21,675$1.78M1.1%+100+0.5%AddedHistory
DAIOData I/O CorpCOM350,950$1.62M1.0%+2,000+0.6%AddedHistory
CSCOCisco Systems, Inc.Stock25,100$1.59M1.0%+100+0.4%AddedHistory
OESXOrion Energy Systems, Inc.COM423,622$1.53M0.9%+750+0.2%AddedHistory
KLICKulicke & Soffa Industries IncCOM24,905$1.51M0.9%+24,905NewHistory
Invesco QQQ Trust Series I46090E103ETF3,775$1.50M0.9%−190−4.8%Reduced–
SASeabridge Gold IncCOM89,445$1.48M0.9%+785+0.9%AddedHistory
VZVerizon Communications IncStock27,949$1.45M0.9%00.0%UnchangedHistory
EAFGraftech International LtdCOM119,000$1.41M0.8%−10,000−7.8%ReducedHistory
SYFSynchrony FinancialCOM30,150$1.40M0.8%−700−2.3%ReducedHistory
KOPNKopin CorpCOM322,700$1.32M0.8%00.0%UnchangedHistory
TRGPTarga Resources Corp.COM25,025$1.31M0.8%−1,000−3.8%ReducedHistory
CVSCVS Health CorpStock12,440$1.28M0.8%−200−1.6%ReducedHistory
BLDRBuilders FirstSource, Inc.Stock14,822$1.27M0.8%00.0%UnchangedHistory
IMDXInsight Molecular Diagnostics Inc.COM578,150$1.25M0.8%+950+0.2%AddedHistory
POWIPower Integrations IncCOM13,500$1.25M0.8%−500−3.6%ReducedHistory
MESOMesoblast LtdSPONS ADR255,850$1.23M0.7%+9,400+3.8%AddedHistory
IDNIntellicheck, Inc.COM NEW260,780$1.21M0.7%+1,350+0.5%AddedHistory
CEQPCrestwood Equity Partners LPUNIT LTD PARTNER42,725$1.18M0.7%+350+0.8%AddedHistory
FBPFirst BancorpCOM NEW80,600$1.11M0.7%−600−0.7%ReducedHistory
VETVermilion Energy Inc.COM86,950$1.09M0.7%+14,400+19.8%AddedHistory
Atlas Technical Consultants, Inc.049430101COM CLS A122,395$1.03M0.6%+3,000+2.5%Added–
XGNExagen Inc.COM88,600$1.03M0.6%+850+1.0%AddedHistory
BRK.BBerkshire Hathaway IncStock3,407$1.02M0.6%+32+0.9%AddedHistory
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT6,160$1.00M0.6%00.0%Unchanged–
NVGSNavigator Holdings Ltd.SHS112,150$995.0K0.6%+1,500+1.4%AddedHistory
ABBVAbbVie Inc.Stock7,262$983.0K0.6%00.0%UnchangedHistory
HESMHess Midstream LPCL A SHS32,880$908.0K0.5%+500+1.5%AddedHistory
OKEONEOK IncCOM14,935$878.0K0.5%+500+3.5%AddedHistory
IVACIntevac IncCOM181,300$854.0K0.5%−3,600−1.9%ReducedHistory
PUBMPubMatic, Inc.COM CL A24,525$835.0K0.5%+24,525NewHistory
FAFFirst American Financial CorpStock10,450$818.0K0.5%−100−0.9%ReducedHistory
BKIBlack Knight, Inc.COM9,868$818.0K0.5%−250−2.5%ReducedHistory
METAMeta Platforms, Inc.Stock2,400$807.0K0.5%00.0%UnchangedHistory
NUANNuance Communications, Inc.COM14,560$805.0K0.5%−17,910−55.2%ReducedHistory
REGNRegeneron Pharmaceuticals, Inc.COM1,272$803.0K0.5%00.0%UnchangedHistory
IMMRImmersion CorpCOM138,920$793.0K0.5%−1,550−1.1%ReducedHistory
PIMFranklin Master Intermediate Income TrustSH BEN INT197,152$779.0K0.5%00.0%UnchangedHistory
WMBWilliams Companies, Inc.COM27,380$713.0K0.4%+850+3.2%AddedHistory
CHGGChegg, IncCOM23,115$710.0K0.4%−1,300−5.3%ReducedHistory
FISVFiserv IncStock6,791$705.0K0.4%−500−6.9%ReducedHistory
iShares Tr464287556ISHARES BIOTECH4,560$696.0K0.4%00.0%Unchanged–
Pretium Res Inc74139C102COM47,300$666.0K0.4%−3,700−7.3%Reduced–
FFord Motor CoStock30,375$631.0K0.4%00.0%UnchangedHistory
EVTEaton Vance Tax-Advantaged Dividend Income FundCOM20,239$603.0K0.4%00.0%UnchangedHistory
BDXBecton Dickinson & CoStock2,330$586.0K0.4%−6−0.3%ReducedHistory
NVSNovartis AGADR6,460$565.0K0.3%00.0%UnchangedHistory
TWOU2U, LLCCOM27,670$555.0K0.3%−800−2.8%ReducedHistory
EMREmerson Electric CoStock5,800$539.0K0.3%00.0%UnchangedHistory
Royal Dutch Shell PLC780259206SPONS ADR A12,100$525.0K0.3%−1,000−7.6%Reduced–
CNXCNX Resources CorpCOM36,200$498.0K0.3%00.0%UnchangedHistory
OPRXOptimizeRx CorpCOM NEW7,075$439.0K0.3%−91−1.3%ReducedHistory
MINAberdeen Intermediate Income FundSH BEN INT116,429$418.0K0.3%−600−0.5%ReducedHistory
VKQInvesco Municipal TrustCOM30,000$403.0K0.2%00.0%UnchangedHistory
BBSIBarrett Business Services IncCOM5,700$394.0K0.2%−400−6.6%ReducedHistory
PCTIPC Tel IncCOM64,000$363.0K0.2%−500−0.8%ReducedHistory
HBIOHarvard Bioscience IncCOM50,000$353.0K0.2%00.0%UnchangedHistory
WLYJohn Wiley & Sons, Inc.CL A6,100$349.0K0.2%00.0%UnchangedHistory
DISWalt Disney CoStock2,115$328.0K0.2%+265+14.3%AddedHistory
SBGISinclair, Inc.CL A11,600$307.0K0.2%−600−4.9%ReducedHistory
COPConocoPhillipsStock4,120$297.0K0.2%00.0%UnchangedHistory
DBIDesigner Brands Inc.CL A20,820$296.0K0.2%−385−1.8%ReducedHistory
ASPUAspen Group, Inc.COM NEW124,570$294.0K0.2%−165,230−57.0%ReducedHistory
NUVNuveen Municipal Value Fund IncCOM26,500$275.0K0.2%00.0%UnchangedHistory
ARCCAres Capital CorpCEF12,940$274.0K0.2%00.0%UnchangedHistory
AFLAflac IncStock4,100$239.0K0.1%−550−11.8%ReducedHistory
MHDBlackRock Muniholdings Fund, Inc.COM13,461$226.0K0.1%00.0%UnchangedHistory
CEMIChembio Diagnostics, Inc.COM NEW196,110$224.0K0.1%−158,560−44.7%ReducedHistory
DMDesktop Metal, Inc.COM CL A43,100$213.0K0.1%−15,650−26.6%ReducedHistory
CVXChevron CorpStock1,800$211.0K0.1%+1,800NewHistory
ITCIIntra-Cellular Therapies, Inc.COM4,000$209.0K0.1%+4,000NewHistory
Maverix Metals Inc57776F405COM NEW45,000$197.0K0.1%00.0%Unchanged–
ETEnergy Transfer LPCOM UT LTD PTN20,618$170.0K0.1%00.0%UnchangedHistory
INTZIntrusion IncCOM NEW38,580$133.0K0.1%−38,750−50.1%ReducedHistory

Sold out since Q3 2021 (4)

Positions held at the end of Q3 2021 that are gone from this filing.

Positions of Penbrook Management LLC sold out since Q3 2021
SecurityClassShares in Q3 2021Value in Q3 2021% of portfolio in Q3 2021History
STKSONE Group Hospitality, Inc.COM83,205$889.0K0.6%History
LMRKLandmark Infrastructure Partners LPCOM UNIT LTD34,830$569.0K0.4%History
GLPGlobal Partners LPCOM UNITS22,680$480.0K0.3%History
BLNEBeeline Holdings, Inc.COM165,430$427.0K0.3%History